Compilare: user.cpp: In function ‘int cb0(int)’: user.cpp:8:19: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] int st=1,dr=n,mid; ^ user.cpp: In function ‘int cb1(int)’: user.cpp:30:12: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] return mid; ^ user.cpp: In function ‘int cb2(int)’: user.cpp:43:12: warning: ‘mid’ may be used uninitialized in this function [-Wmaybe-uninitialized] return mid; ^